| 秦岭卡林型金矿床及相关问题探讨 |
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| 引用本文： | 张复新,宗静婷,马 秦.秦岭卡林型金矿床及相关问题探讨[J].矿床地质,1998,17(2):172-184. |
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| 作者姓名： | 张复新 宗静婷 马 秦 |
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| 作者单位： | 1. 西北大学地质系,西安
2. 中国科学院贵阳地球化学所,贵阳 |
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| 基金项目： | 武警黄金指挥部重点科研项目 |
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| 摘 要： | 鉴于目前对沉积岩型金矿、卡林型金矿概念和类型划分存在分岐,该文在对秦岭沉积岩区浸染状金矿研究基础上,主张将沉积岩为容矿岩石的金矿床划分为广义和狭义两类：沉积岩型金矿床是具有广义内涵的一类金矿,包容了从沉积－轻微改造,到沉积－强烈改造的一类热液金矿;可划分四种亚类：卡林型、变质细碎屑岩型、热水沉积岩型、脉状体型。卡林型金矿床是狭义内涵的金矿类型,属于沉积岩型金矿类型中的重要亚类;在区域金成矿密集区内,可构成卡林型矿床地球化学系列。建议不要将沉积岩型金矿和卡林型金矿相互代替使用或等同起来。秦岭沉积岩区卡林型金矿与美国卡林典型矿床有较好的类比性。矿床具有沉积－轻微改造的中—低温热液成因特征。
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| 关 键 词： | 卡林型金矿床 沉积岩型金矿床 成矿特征 成矿机制 秦岭 |
A tentative discussion on the carlin-type gold deposits in Qinling and related problems |
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| Zhang Fuxin,Zong Jingting.A tentative discussion on the carlin-type gold deposits in Qinling and related problems[J].Mineral Deposits,1998,17(2):172-184. |
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| Authors: | Zhang Fuxin Zong Jingting |
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| Abstract: | In view of the differences existent in the concept and classification of sediments-hosted gold deposits and Carlin-type gold deposits, this paper, based on the study of disseminated gold deposits in Qinling sedimentary area, suggests classifying gold deposits hosted by sedimentary rocks into two types, i. e. , broad sense deposits and narrow sense ones. The sediments-hosted gold deposits are of broad sense type, which consists of sedimentary-weakly reformed and sedimentary-intensely reformed hydrothermal deposits and might be divided into four subtypes, viz. , Carlin type! metamorphosed fine-clastic rock type, sedex type and vein type. The Carlin-type gold deposits are of narrow sense type and constitute an important subtype in sediments-hosted gold deposits. In gold-concentrated areas of the regional metallogenic belt, the Carlin-type gold deposits might form their geochemical series. It is suggested that the terms "sediments-hosted gold deposit" and "Carlin-type gold deposit" should not be used as synonyms. The Carlin-type gold deposits in Qinling area are well correlatable with the Carlin-type gold deposits in U. S. A. These deposits are characterized by sedimentary-weakly reformed mesothermal-epithermal origin. |
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| Keywords: | Carlin type gold deposit sediments hosted gold deposit mineralization characteristics metallogenic mechanism Qinling area |
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